JP2007227350A - Electrical connector jack - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector jack, having a spring contact terminal with a pair of conductors for a plurality of communicating lines, specifying an RJ type connecting interface. <P>SOLUTION: The electrical connector is provided with a circuit board 66, having conductors connected alternately extending each between terminal positioning parts 41-48 of spring terminals and other terminal positioning parts. There are provided a pair of spring contact conductors to terminate at the terminal positioning parts 41-48 of each spring terminal. Each of the spring contact conductors of the pair of the spring contact conductors has a plug contact zone, and a spring contact conductor path, from a corresponding plug contact zone to each of terminal positioning part 41-48 of spring contact terminal, is formed. The pair of the spring contact conductors provides the lengths of different conductor paths, from the corresponding plug contact zones to the terminal positioning parts 41-48 of each of spring contact terminals. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to electrical connector jacks, in particular to connectors for communication systems, such as RJ type and jack connectors, and in particular to high levels of TIA (Electrical Telecommunications Industry Association) / EIA (Electric Industry Association) Category 6 performance. The present invention relates to a connector that realizes a high throughput transmission performance.

  With increasing Internet traffic and increasing complexity and usage of web applications, network providers and network infrastructure managers have demanded high transmission rates for network devices. To meet this requirement, TIA / EIA defines a high performance cable category often referred to as CAT6.

  Such high performance cables use the RJ45 jack and plug format. An arrangement for the format of a communication line in such a connector includes a communication line with a central conductor pair in the connector and a separate conductor pair in the connector. One conductor connection of a separate pair is on each side of the central pair of conductor contacts. When such an RJ45 plug mates with an RJ45 jack with a high frequency signal (according to the standard), the separated pair receives a high near-end crosstalk attenuation (NEXT) from the other pair.

  Techniques for coupling one pair of electrical signals of a conductor to another pair of conductors are known for compensating or eliminating crosstalk. JP-A-64 (1989) -20690 ('690) discloses a modular telephone jack having a crosstalk protection function in which a capacitor is installed in a housing. The printed circuit board is connected to the capacitor and further comprises a race connected between the crimp contact (IDC) and the jack contact spring. In FIG. 4, an arrangement is shown in which traces are used to form capacitors and deal with crosstalk. These traces cross each other on the left and right. The '690 publication is connected to circuit board interconnect traces that provide capacitive interaction and reduce crosstalk, and circuit board interconnect traces to reduce crosstalk within the jack. A separate capacitor is disclosed.

US Pat. No. 5,997,358 (US′358) provides an electrical connector that achieves high transmission performance (CAT6) by providing a compensation stage that introduces a predetermined amount of compensation between a pair of conductors. Is disclosed. Two or more such compensation stages are provided. The first compensation stage adds a compensation signal that is time delayed with respect to the other compensation stages. In the first stage, crosstalk compensation is introduced between a pair having a first predetermined magnitude and phase at a certain frequency. In the second stage, crosstalk compensation is introduced between pairs having a second magnitude and phase at a certain frequency. The size of the first stage is larger than the offending crosstalk, and the second stage reintroduces the offending crosstalk. A number of compensation stages are used to compensate for the phase problem. This is because at high frequencies, it is not possible to introduce crosstalk compensation that is 180 degrees away from offending crosstalk.
JP-A 64-20690 US Pat. No. 5,997,358

  The present invention provides an RJ type for connecting to RJ type plugs, for connecting to interconnected circuits on a printed circuit board, and for connecting to crosstalk compensation means for achieving a high level of throughput. An object of the present invention is to provide a connector jack including a spring contact having a conductor pair for a plurality of communication lines that defines a connection interface.

  According to the present invention, a main body including a support portion and a plug receiving portion defining an opening having an insertion surface, and the support portion for arranging the circuit board with respect to the plug receiving the insertion surface are mounted. An electrical connector jack comprising a circuit board is provided. The circuit board includes circuit traces each extending from a terminal position portion of the spring contact. The end position portion of the spring contact has a first set of end position portions of the spring contact having a first interval from the insertion surface and the end position of the spring contact having a second interval from the insertion surface. A second set of portions and a third set of end positions of the spring contact with a third spacing from the insertion surface. A plurality of spring contact conductors are provided having a common plug contact zone, each terminating at each one of the end location portions of the spring contact. The common plug contact zones are substantially separated by a common spacing from the insertion surface.

  Each of the spring contact conductors provides a conductive path from the plug contact zone to the end location portion of each spring contact. The spring contact conductor connected to the first set of the end position portion of the spring contact and the second set of the end position portion of the spring contact has a conductive path of 7 mm or less, and the end position of the spring contact The spring contact conductor connected to the third set of parts has a conductive path of 7 mm or more.

  According to another aspect of the invention, an electrical connector is provided that includes a circuit board with interconnecting conductors, each extending between a termination position portion and another termination position portion of a spring contact. Also, a set of spring contact conductors each ending at each one of the end position portions of the spring contact is provided. Each of the spring contact conductors in the set of spring contact end position portions comprises a plug contact zone, and 6.7 mm or less from the corresponding plug contact zone to the end position portion of each spring contact or 6 Define a spring contact conductive path of 2 mm or less.

  Also provided are additional sets of spring contact conductors each terminating at each one of the end position portions of the spring contact. The set of additional spring contact conductors comprises a right outer spring contact conductor on the right side of the other spring contact conductors and a left outer spring contact conductor on the left side of the other spring contact conductors. The additional spring contact conductor sets each comprise a plug contact zone and define a spring contact conductive path of 10 mm or more from the corresponding plug contact zone to the end position portion of each spring contact. This makes it possible to adopt a spring contact (pin) configuration that realizes the physical requirements of the jack and plug.

  The end positions of the spring contacts are offset from the end positions of the adjacent spring contacts so that the spacing of the corresponding spring contact conductors from the plug contact zone is different. Have a spring contact conductive path of 4.8 mm to 5.2 mm, and the other connecting conductors of the first set of spring contact conductors have a spring contact conductive path of 4.0 mm to 4.4 mm. Have.

  A pair of mutually connected conductors and electrically connected spring contact conductors form a transmission line portion. The connector further provides a first / second crosstalk compensation signal between a first interconnected conductor of one communication line and a second interconnected conductor of another communication line. The second / first crosstalk between the 1 / second crosstalk compensation element and the second interconnected conductor of one communication line and the first interconnected conductor of the other communication line. A second / first crosstalk compensation element for providing a compensation signal, each crosstalk compensation element being applied at or adjacent to the termination position portion. The only compensation in which the first / second crosstalk compensation element and the second / first crosstalk compensation element are connected between the first communication line and the second communication line on the circuit board. It is an element. Another crosstalk compensation element provides a crosstalk compensation signal between the interconnected conductors of the one communication line and the interconnected conductors of the second communication line. The other crosstalk compensation element that provides a further crosstalk compensation signal is 7.2 mm or less, 6.7 mm or less, or 6.2 mm or less from the terminal position portion of the one communication line and the second communication line. Or at the opposite end position portion (IDC end position portion).

  The present invention further includes a connector comprising a pair of central spring contact conductors (of the first transmission line) and a pair of separate spring contact conductors, one conductor on each side of the pair of central spring contact conductors. A printed circuit board that is a jack and is simplified to include only a conductor defining an RJ-type connection interface and a single crosstalk compensation element (providing a compensation signal) for each of the crosstalk sources An object of the present invention is to provide a connector jack in which a signal transmitted from the compensation element through the first transmission line and the second transmission line is −46 dB or less at 250 MHz.

  Various novel features that characterize the invention are set forth in conjunction with the features in the appended claims, which are a part of disclosing the invention. For a better understanding of the present invention and its operational advantages and specific objects provided by its use, reference is made to the accompanying drawings and description, in which preferred embodiments of the invention are shown.

  According to the electrical connector jack of the present invention, the spring contact conductor can be terminated at different intervals from the terminal position portion of the circuit board (or from the surface of the opening) while providing contact in the contact area. Become. Further, the spring contact conductor can reduce or prevent crosstalk coupling with the adjacent spring contact conductor.

  With particular reference to the drawings, FIG. 1 shows a jack assembly, indicated at 10. A jack assembly 10 is provided in one of several embodiments described below. Differences between the different embodiments relate to different circuit board embodiments, as described below. Otherwise, each embodiment of the jack assembly includes a jack basic plastic portion 14 and a jack plastic cover portion 12. The plastic basic part 14 includes slots 16 for receiving wires so that they are electrically connected (terminated) to a crimp contact 15. The jack plastic cover portion 12 includes a plug opening 18 that provides an RJ-type interface with disposed spring contacts (or connections, hereinafter the same) conductors (spring contacts or spring connectors) 21-28. The jack assembly 10 may be implemented and used separately or in a bank with other similar jacks that provide a touch panel.

  Spring contact conductors 21-28 in the disclosed embodiment are provided in pairs with various geometries. The outermost spring contacts (contacts) 21 and 28 are similar to the known spring contact geometry, but are slightly longer. Each of the outermost spring contacts 21 and 28 terminates in a circuit board 66 (see FIGS. 3A and 3C), above (with respect to the face of the plug opening 18) and behind, a contact point or contact area 70. Extends against. As shown in FIGS. 4A, 4B and 4C, the contacts 22, 24, 26 have a shorter length and extend upward from the termination points (42, 44, 46) on the circuit board 66, and The contacts 21 and 28 extend rearward at different angles. Contacts 23, 25 and 27 are similar in length to contacts 22, 24 and 26, but terminate on circuit board 66 behind the termination points of contacts 22, 24 and 26 (43, 45, 47). ). The spring contact conductors 21 to 28 each terminate in a printed circuit board 66. The different geometries allow the spring contact conductors 22-27 to terminate at different distances from the end position portion of the circuit board (or from the face of the opening 18) while providing contact in the contact area 70. With this arrangement, the spring contact conductors 21 to 28 are combined with the corresponding conductor contact 60 of the RJ plug 62 when the RJ plug 62 is inserted into the contact position.

  As shown in FIGS. 3A-3D, the RJ plug 62 is inserted into the opening 18 to form a contact position. In this contact position, the plug contact 60 extends a distance from the surface of the opening 18 with respect to the contact position. When the RJ plug 62 is in the contact position, the distance from the surface of the opening 18 of the contact 60 (and the contact area 70) is a standard (within an allowable range), and is about 8.4 mm. Typically, the RJ plug 62 includes a latch element 63 that is connected to the surface of the jack plastic cover portion 12 and installs the plug at a contact position. This maintains the set distance from the face of the opening 18 of the contact 60 (and plug contact area 70). Although there are three different geometries in the set of spring contacts 21-28, the plug contact area 70 for each of the spring contact conductors 21-28 is approximately the same distance from the face of the opening 18. The different geometry of the spring contact conductors 21-28 also reduces or prevents crosstalk coupling of adjacent spring contact conductors 21-28 in the region outside the plug contact area 70.

  As shown in FIGS. 7 and 8, the end position portions 41, 48 on the circuit board 66 for the spring contact conductors 21 and 28 are compared to the end position portions for the spring contacts 22, 24, 26, respectively. Far from the contact area 70 and close to the face of the opening 18. The end position portions along the circuit board 66 for the spring contact conductors 22, 24, and 26 are closer to the surface of the opening 18 than the end position portions for the spring contact conductors 23, 25, and 27. As a result, these end position portions provide different distances or signal paths (distances of different conductive paths) from the end position portions (41 to 48) to the contact area 70.

  The printed circuit board 66 (FIGS. 4 and 5) includes through holes 41 to 48 that receive the spring contact conductors 21 to 28 to form a terminal position portion. The IDC 15 is connected to the circuit board 66 through the through holes 81 to 88. The through holes 41 to 48 are connected to the through holes 81 to 88 via interconnecting conductors each taking the form of a trace (for example, a conductor arranged to draw the shape) 31 to 38. The through holes 41 to 48, the through holes 81 to 88, and the traces 31 to 38 extend the signal path of the communication line related to the spring contact conductors 21 to 28.

  The jack assembly 10 is used to provide a communication line for high performance communication applications. Each such transmission line has a pair of signal paths. The signal path of the embodiment has a pair of signal paths 1 and 2, a pair of signal paths 3 and 6, a pair of signal paths 4 and 5, and a pair of signal paths 7 and 8. The signal paths 1 and 2 are in the region of the jack assembly 10 and are formed by the conductors including the spring contact conductors 21 and 22, the through holes 41 and 42, the traces 31 and 32, the IDC through holes 81 and 82, and the connected IDC 15. The Most of the signal paths for a pair of communication lines are adjacent to each other, except for the areas of signal paths 3 and 6, which include spring contact conductors 23 and 26. Spring contact conductors 23 and 26 are separated by spring contact conductors 24 and 25 disposed between them. The spring contact conductors 25 and 24 are a central conductor pair or a central conductor communication line group. The spring contact conductors 23 and 26 are a pair of separated conductors or a group of separated conductor communication lines. Crosstalk becomes a problem in a region including a conductor 23 having transmission conductors 1 and 2 on one side and a conductor 24 having transmission lines 4 and 5 on the other side. The conductor 26 includes a conductor 24 from the transmission lines 4 and 5 on one side and a conductor 27 from the transmission lines 7 and 8 on the other side.

A conductive trace is further provided that does not provide a path for the communication line. In other words, the (dead-end) trace of one communication line interacts with the (dead-end) trace of another communication line and is referred to herein as a crosstalk compensation element (more precisely, capacitive And a reactive element having a conductive function). FIG. 7 shows a crosstalk compensation element 64 comprising traces connected to the end position portions of the spring contact conductors 24 and 26. A compensation element 53 is provided comprising traces connecting to the end positions of the spring contact conductor 23 and the spring contact conductor 25. The compensation element 53 introduces a compensation signal v ₂ having a magnitude substantially the same as the magnitude of the crosstalk signal (noise signal) v ₁ introduced between the spring contact conductors 23 and 24 and the contact area 70. The compensation element 64 introduces a compensation signal v ₂ having substantially the same magnitude as the magnitude of the crosstalk signal (noise signal) v ₁ introduced between the spring contact conductors 25 and 26 and the contact area 70.

As shown in FIG. 6, to compensate for the noise v ₁ , the signal v ₂ is added (along the signal path) a distance behind the v ₁ application point or area (contact area 70). Considering the complex plane diagram (FIG. 6), this distance results in a phase lag indicated by φ in FIG. From FIG. 6, the vector sum of v ₁ and v ₂ represents a vector v _t having the following two components.

v _tx = v ₂ sinφ. . . Formula (1)
v _ty = v ₂ cos φ−v ₁ . . . Formula (2)
The size of v _t is

It is.

The inventor has found that the minimum v _t occurs when ∂v _t / ∂v ₂ = 0, which occurs when v ₂ = v ₁ cosφ. from now on,

It is.

The required compensation vector can be calculated correctly, but cannot be generated without tolerance problems. Assuming 12.5% as a reasonable and feasible tolerance level, v ₂ = 0.875 v ₁ cos φ or v ₂ = 1.125 v ₁ cos φ. Using v ₂ = 1.125v ₁ cosφ,

Is obtained. From equation (5), it is clear that v _t is almost proportional to cos φ and inversely proportional to the phase delay angle φ. Considering the actual example of Category 6 (CAT6) connector hardware, TIA / EIA568B. According to 2-1, it must have a v _t of −46 dB or less at 250 MHz. From the stated standards, it can be seen that v ₁ must be −29 dB at 250 MHz between the central pair (24, 25) and the separated pair (23, 26). Substituting these data into equation (5) yields 10 log (1−0.984 cos ² φ) = − 17.

  The first embodiment of the present invention limits the compensation for a single compensation signal (single compensation element) so that φ is not less than 3.8 degrees. Otherwise, the generated NEXT noise is unacceptable (CAT6 performance is not achieved). The inventor has also found that there is no obvious way to use the signal compensation signal to meet the CAT6 performance requirement when the dimensional tolerance is 14% or more.

Considering the electromagnetic wave transmitted in the copper transmission line, a normal speed factor of 0.65 can be used. The wavelength at 250 MHz is 0.78 meters. As a result, the physical length for a 3.8 degree phase delay is 8.2 mm. However, since the compensation signal bypasses in the transmission line (using the first signal path and the second signal path of the transmission line), between v ₁ and v ₂ (between the contact area and the compensation element contact area) The actual distance between) is usually less than 4.1 mm. In the case of 10% dimensional tolerance, which is the limit of today's manufacturing technology capability, the performance is that the distance between v ₁ and v ₂ (between the contact area and the compensation element contact area) is longer than 6.2 mm. Achieved in distance. The jack and jack assembly 10 of the present invention provides a distance from the plug and jack contact position 70 of the one or more spring contact conductors 21-28 to the application position of the compensation signal, particularly less than 6.2 mm. The compensation signal is introduced or applied to one of the compensation elements (for example, 35, 64) at a position such as the through holes 41 to 48 in the termination region of each spring contact.

FIG. 5 shows the spring contact conductors 21 to 28 terminating, and shows in perspective the position of these conductors 21 to 28 in the contact state (the contact state is shown in FIG. 3). 4A to 4C show the length from the plug contact area 70 to the end position portion of the printed circuit board 66 (66 '). 5 and 4A to 4C, it can be seen that the lengths of the signal paths of the two pairs of conductors 22, 24, 26 and 23, 25, 27 are shorter than the length of the signal paths of the conductors 21 and 28. . Reduced signal path lengths (including bent signal path lengths) are considered from FIGS. 4A-4C. The signal path length of conductors 21 and 28 is preferably longer than the front jack. The length of the signal path of conductors 21 and 28 may also be shortened, but is not required to obtain performance in the jack assembly according to the present invention (the crosstalk attenuation to be reduced is central conductors 24 and 25 and separated). Much less than with the conductors 23 and 26). In particular, using conductors 23, 24, 25, and 26 where crosstalk is a greater problem, the present invention allows the terminal zone portions 43, 44, 45, and each of conductors 23, 24, and 26 from contact zone 70, respectively. Provides shorter distances up to 46. Furthermore, according to the present invention, the compensation element 64 and the compensation element 35 are applied to each of the conductors 23, 24, 25 and 26. The length of the signal path of each conductor 23, 24, 25 and 26 is less than 6.2 mm in each case. In the preferred embodiment shown, the distance of the conductors 23, 25, 27 from the plug contact area 70 of the plug 62 and jack 10 is 5 mm. In the preferred embodiment shown, the distance of conductors 22, 24 and 26 from plug contact area 70 of plug 62 and jack 10 is 4.2 mm. Termination areas located at different locations provide different spacing and provide different signal path lengths. Furthermore, the adjacent conductors have different geometries, allowing lower coupling of adjacent conductors (reducing the initial crosstalk signal v ₁ ) and lowering the required compensation signal v _2. . Further, it may be advantageous to provide equal path lengths for conductors 24 and 26 that are compensated by a common compensation element 64. Similarly, it would be advantageous to provide equal path lengths for conductors 23 and 25 that are compensated by a common compensation element 35. Furthermore, it is not necessary to reduce the length of the signal path for the outer conductors 21 and 28 (according to the disclosed embodiment). As a result, the cost of providing shorter and more accurate conductors 22-27 can be avoided in the case of spring contact conductors 21 and 28.

  Crosstalk affecting the separated communication line pair (by spring contact conductors 23 and 26) from the left communication line (spring contact conductors 27 and 28) and the right communication line (spring contact conductors 21 and 22) is also Compensated. The right pair of first spring contact conductors 21 does not significantly affect the separated pair of first spring contact conductors 23. However, the right pair of second spring contact conductors 22 is adjacent to the separated pair of first spring contact conductors 23 and signal coupling occurs. The left pair of first spring contact conductors 27 are adjacent to the separated pair of second spring contact conductors 26 and signal coupling occurs. The third crosstalk compensation element 13 is connected to the circuit board 66 and is the only one applied between the first signal path of the third transmission line and the first signal path of the second transmission line. As crosstalk compensation, between the first signal path (21, 41, 31) of the right (third) transmission line and the first signal path (23, 43, 33) of the second transmission line. Provide crosstalk compensation. The fourth crosstalk compensation element 68 is connected to the circuit board 66 and is the only one applied between the second signal path of the fourth transmission line and the second signal path of the second transmission line. As crosstalk compensation, between the second signal path (28, 48, 38) of the left (fourth) transmission line and the second signal path (26, 46, 36) of the second transmission line. Provide crosstalk compensation. Furthermore, better performance can be provided by providing an impedance balance element 62 (although not essential).

  In order to implement one compensation system of the present invention, the spring contact conductors 21-28 must provide the mechanical functions necessary for an RJ45 type connection. Allowable deformations in the contact spring for the RJ45 type connection must be taken into account.

  The spring contact (21-28) of the RJ45 connector is shown as a beam. The relationship between beam deformation and beam length can be outlined as follows.

Here, δ _max is a deformation allowed without yielding. σ _w is the allowable pressure without yielding. l is the distance between load and support. E is the Young's modulus of the material. h is the height of the beam portion. Phosphorous copper often used for such electrical connector springs is used for the spring contacts 21-28. This has an E value of about 110,000 N / mm ² . The value of σ _w is about 600 N / mm ² . A conventional RJ45 contact spring has a cross section with a height of 0.35 mm and a width of 0.4 mm. When these are substituted into equation (6), the relationship of δ _max to l shown in FIG. 9 is provided.

  From FIG. 9, it can be seen that for spring lengths less than 7 mm, the allowable deformation of the spring is less than 0.5 mm. FCCPart 68 requires 0.3 mm for the allowable deformation of the spring to cover the allowable height of the plug blade. Manufacturing issues provide other 0.3mm allowable deformations resulting from production errors. To make things more complicated, the TIA / EIA 570 requires an RJ45 jack that is compatible with a 6-port RJ11 plug (see FIGS. 3A and 3B). This adds an additional 0.8 mm deformation to pins 1 and 8 of the RJ45 jack. Therefore, the minimum deformation required for the RJ45 contact spring is about 1.5 mm. From FIG. 9, it can be seen that according to the conventional spring design, the length of the spring is 10 mm or more.

  In accordance with the present invention, spring contacts 22-27 are used that have a reduced length from the contact area 70 to the end position portion (42-47), ie, the crosstalk compensation element (which takes the form of a single compensation). Thus, a single compensation method is executed. However, as mentioned above, the method of shortening the length of the spring and satisfying its deformation requirements imposed by FCC and TIA / EIA 570 to achieve higher performance for new performance requirements by conventional design There is no. In accordance with the present invention, the performance requirement is that the spring contacts 21 and 28 (pin 1 signal path and pin 8 signal path) have longer paths than the other contact springs (pins) 22-27. This is accomplished by providing spring contacts 22-27 having a reduced length from the contact area 70 to the crosstalk compensation element (in the form of a single compensation). Thereby, the deformation requirement of TIA / EIA 570 applies only to the spring contacts 21 and 28 (pins 1 and 8), which are satisfied by the longer spring contacts 21 and 28. Furthermore, the spring contacts 22 to 27 are thinner than known cross sections, ie 0.3 mm in height (with a slight tolerance) and 0.4 mm in width (or a slight tolerance of 0.3 mm). Less than 4 mm). Thereby, it can be confirmed that the deformation of the spring is sufficiently large. According to another embodiment, a cross section with a height of 0.2 mm and a width of 0.4 mm (or less than 0.4 mm with a slight tolerance) is used. As the cross-sectional height is reduced, the contact force also decreases. Thus, in some cases, an insulated spring support 90 is used to maintain contact force.

  Other embodiments of the present invention are described with respect to FIGS. The connector 10 includes a circuit board 66 'that uses one or more compensation elements (multiple phase compensation) for at least some paths. The connector 10 provides 10G performance hardware at 500 MHz. To design high frequency, high performance connectors, in addition to the first phase, a well-known crosstalk compensation scheme called multiple phase compensation is used to provide a compensation phase between the same communication lines. The technique has been described above. However, if the frequency band is too wide (to provide high throughput-bandwidth), the time delay of compensation makes it difficult to balance performance at both ends of the frequency band. Also, spring contact length and termination techniques for contact zone 70 are used in the first phase in the second embodiment for 10G performance, providing at least one of the second phases.

If V ₁ is a vector indicating plug / jack near-end crosstalk (NEXT), a well-known multi-phase compensation technique is used to compensate for the noise (crosstalk) cross (close to contact area 70). in some positions of the rear talk introducing position, the first compensation is added as an inverse of the signal vector V _2. The signal V ₂ is about twice as large as the signal V ₁ . Then, have the same polarity (including interaction of the initial crosstalk noise and identical signal paths), a vector having a magnitude of V _1, is applied in the rear from the V ₂ by the same distance, the V ₂ Balance the effects of time delays. FIG. 10 shows the concept. Vector sum is
V _x = V ₂ sin θ−V ₁ sin 2θ
V _y = V ₂ cos θ−V ₁ (1 + cos 2θ)
And the residual vector is

Is calculated as

A rule of thumb is that in the middle of the bandwidth, the residual vector V _res is zero so that its performance is balanced against both ends. The frequency where NEXT is zero is called the tuning frequency. It is known that V ₂ = 2V ₁ cos θ _t at the tuning frequency. From this, the remaining noise of any frequency is obtained indicating that the subscript t has been tuned. Substituting V ₂ into equation (7) yields residual noise associated with any frequency.

V _res = 2V ₁ (cos θ _t −cos θ). . . Formula (8)
To reduce the complexity of the cosine function, Taylor expansion,

Apply.

For a theta and theta _t is sufficiently smaller than 1, it can be omitted without loss of accuracy higher-order terms. as a result,

It becomes. l is the length that the signal travels and is equal to twice the distance between V ₁ and V ₂ . v is a signal transmission speed and f is a frequency. Substituting the above elements into equation (8),

Is obtained. From equation (9), at the end of the bandwidth, the residual noise V _res is proportional to the square of l, the distance squared and is one-half the bandwidth | f ² -f _t ² | proportional and, in the case of f = f _t, it is a V _res = 0.

  Dimensional tolerances are then considered. To make the calculation easier to understand, an error is assigned to the original vector.

V _x = V ₂ sin θ−V ₁ sin 2θ
V _y = V ₂ cos θ−tV ₁ (1 + cos 2θ)
t is a tolerance factor.

  The Taylor expansion of the cosine function

Is obtained.

A = 4 (cos _t θ−cos θ) ² -4 (t−1) cos θ (cos θ _t −cos θ) + (t−1) ²
Then substituting the cosine series into A, and from equation (10),

And 20 log ₁₀ V _res = 20 log ₁₀ V ₁ +10 log ₁₀ A. . . Formula (12)
Is obtained.

Considering real-world factors, TIA / EIA defines an increasing CAT6 cable category for 10G Ethernet applications operating from 1 MHz to 500 MHz. A reasonable tuning frequency is 250 MHz. Considering the lower end residual noise, 10 MHz is the lowest frequency specified by TIA / EIA as the test plug value. Taking a central test plug consisting of a pair of communication lines 3 and 6 and a pair of communication lines 4 and 5, V ₁ is −57 dB from the measured value obtained. The allowable residual noise is TIA / EIA568B. According to the criteria of 2-1, it is -74 dB. Substituting this restriction into equation (11) yields A of 0.02 or less. Next, assuming a tolerance factor t = 1.13 approximating a standard tolerance of 12.5% and a standard transmission speed v = 2.0e8, from Equation (10), 3792l ² + 16l ² −0.03 ≦ 0 is obtained. As a result, l ≦ 13.4, and the distance between V ₁ and V ₂ , that is, the distance from the contact zone 70 to the end position portion, which is the distance from the crosstalk signal to the first compensation position, is 6 Less than 7 mm.

  Referring to FIGS. 11 and 12, a circuit board 66 ′ arranged in the same manner as the circuit board 66 described above is shown. In particular, the circuit board 66 'of the second embodiment is connected to the plastic part 14 having the slot 16 for the crimp contact 15 and the plastic cover part 12 (see FIGS. 1 and 2). The circuit board 66 'includes spring contact conductors 21 to 28 that are terminated (connected to circuit board traces), respectively, at termination position portions 41 to 48. As the end position portion, a plated through hole is used, or another technique for bringing the spring contact into contact with the circuit board trace.

  Using a higher throughput application (10G) using jack assembly 10, for example, circuit board 66 'can communicate with multiple communication or transmission lines, each communication line being based on a pair of signal paths. Used where 10 and 11, signal paths (the beginning and end of such paths transmitted by circuit traces 31-38 on circuit board 66 ') are classified as 1-8. Termination location portions 41-48 are connected to each of the interconnected conductors or traces 31-38. Traces 31-38 extend transmission line signal paths 1-8. Up to four transmission lines from path 1 to path 8 are connected to the spring contact conductors through each of the through holes or end position portions 41 to 48, the traces 31 to 38, the through hole or end position portions 81 to 88, and the crimp contact 15. 21 to 28.

  Signal paths 1 and 2 are transmission lines on the left outer side, and are connected to each of IDC 15 by spring contacts 21 and 22, through holes 41, 42 and 28, through holes 47 and 48, and through holes 87 and 88. Traces 37 and 38 are provided. Signal paths 4 and 5 are central transmission lines and include spring contacts 24 and 25, through holes 44 and 45, and traces 34 and 35 connected to each of IDC 15 by through holes 84 and 85. Signal paths 3 and 6 are separate transmission line pairs, with traces 33 and 36 connected to each of IDC 15 by spring contacts 23 and 26, through holes 43 and 46, and through holes 83 and 86, respectively. Prepare.

The second embodiment of the present invention compensates for crosstalk by compensation called multiphase compensation. The first compensation phase introduces capacitors (reactive elements-compensation) such as 64 and 53, which introduce signals from signal paths that are not originally affected by crosstalk caused near or in the plug contact area 70. Device). First compensation phase introduces compensation signal V _2. Where the second phase is applied (as mentioned, the second phase is not applied to each communication line and the pair of communication lines separated from the central communication line has unequal phase delays) Signal V ₂ is twice the size of the original crosstalk signal. If the second phase is not applied between the communication lines, a single phase compensation signal having approximately the same value is introduced as described above. The second phase of compensation preferably reintroduces V ₁ at approximately the same interval as the interval between the original crosstalk values V ₁ and V ₂ . Because the compensating elements 64 and 53 are applied in the vicinity of the end position portions 44, 46, 45, 43 or in the end position portions 44, 46, 45, 43 and are based on the spring contact configuration of the spring contacts 21-28. , V ₂ or a single phase (opposite but equal to V ₁ ) is introduced from the contact zone 70 into a signal path of less than 6.7 mm or less than 6.2 mm. A crosstalk compensation element (capacitor) 13 is connected to the circuit board 66 and provides crosstalk compensation by applying a compensation signal between paths 1 and 3. This compensation element 13 is the only phase or first phase (apart from different communication lines). In the first embodiment, an impedance balance element 62 is provided.

In order to achieve even greater bandwidth (higher throughput), between signal paths 5 and 6, which are signal paths that are originally affected by or in the crosstalk V ₁ that occurs near or in the plug contact area 70. At least one other compensation element 56 is provided that introduces a compensation signal corresponding to V ₁ based on the interaction. Compensation element 56 is connected in the range of termination position portions 45, 46 to 6.2 mm to 7.2 mm, for example 6.7 mm, and as described above has the advantage based on the application of compensation signal V ₂ to compensation signal V ₁ . provide. For the multiphase compensation embodiment, two equal phase delays are applied between the three signal vectors (ie, original (crosstalk), first compensation, second compensation). In the preferred embodiment, unequal phase delays are used to separate their signal vectors because only one set of paths has a second phase. Further, since the phase delay between the first compensation vector (compensation signal V ₁ ) and the original (crosstalk) vector is reduced, the required balance compensation (second compensation) is small. The end result is almost unaffected by this small signal phase delay error. As a result, the compensation element 56 is applied to provide a larger phase delay and a smaller amount of compensation. As a result, the second compensation (compensation element 56) is separated from the first compensation (64, 53) in consideration of the area required by the compensation circuit. For example, the compensation element 64 and 53 takes the form of a compensation element 56 that is arranged as an unequal phase delay with V ₂ applied less than 6.7 mm from the original crosstalk (V ₁ ). Compensation is connected to the termination location portions 85, 86 to provide good 10G performance (TIA / EIA is increasing the CAT6 cable category for 10G Ethernet applications operating from 1MHz to 500MHz).

  While specific embodiments of the invention have been shown and described in detail, application of the concepts of the invention have been shown, it will be understood that the invention may be embodied in other ways without departing from such ideas. The

As can be seen from the above, the features of the embodiment of the present invention are grasped as follows.
(1) An electrical connector jack,
A main body including a support portion and a plug receiving portion defining an opening having an insertion surface;
A circuit board mounted on the support for placing the circuit board with respect to the plug that receives the insertion surface, the circuit board comprising circuit traces extending from a terminal position portion of the spring contact, respectively, A first set of spring contact end position portions having a first spacing from the insertion surface and a second set of spring contact end position portions having a second spacing from the insertion surface. And a circuit board comprising: a third set of end positions of spring contacts having a third spacing from the insertion surface;
A plurality of spring contact conductors, each terminating in one of the end position portions of the spring contact provided therein, and each being substantially separated by a common distance from the insertion surface And a plurality of spring contact conductors having a plug contact zone.
(2) In the electrical connector jack according to (1),
Each of the spring contact conductors provides a conductive path from the plug contact zone to the end position portion of each spring contact, and a first set of end positions of the spring contact and the spring contact The spring contact conductors connected to the second set of end position portions have a conductive path of 7 mm or less, and the spring contact conductors connected to the third set of end position portions of the spring contacts have a conductive path of 7 mm or more. An electrical connector jack characterized by comprising:
(3) In the electrical connector jack according to (2),
Each of the spring contact conductors provides a conductive path from the plug contact zone to the end position portion of each of the spring contacts and connects to a first set of end position portions of the spring contact Has a conductive path between 4 mm and 5 mm, and a spring contact conductor connected to the second set of end positions of the spring contact has a conductive path between 4.5 mm and 5.5 mm. An electrical connector jack, wherein the spring contact conductor connected to the third set of the terminal position portion of the spring contact has a conductive path of 10 mm or more.
(4) In the electrical connector jack according to (2),
Each of the spring contact conductors provides a conductive path from the plug contact zone to the end position portion of each spring contact, and a first set of end positions of the spring contact and the spring contact An electrical connector jack, characterized in that the spring contact conductors connected to the second set of end position portions have a cross section with a height of 0.35 mm or less and a width of 0.4 mm or less.
(5) In the electrical connector jack according to (2),
Each of the spring contact conductors provides a conductive path from the plug contact zone to the end position portion of each spring contact, and a first set of end positions of the spring contact and the spring contact The spring contact conductor connected to the second set of end position portions has a minimum deformation of 1.5 mm or less, and the spring contact conductor connected to the third set of end position portions of the spring contact is at least 1 An electrical connector jack characterized by a minimum deformation of 5 mm.
(6) In the electrical connector jack according to (1),
Each of the spring contact conductors provides a conductive path from the plug contact zone to the end position portion of each of the spring contacts;
Three spring contact conductors are connected to a first set of end position portions of the spring contact, and the three spring contact conductors are connected to a first set of end position portions of the spring contact. The second end position portion of the spring contact is connected by a contact conductor or by a spring contact conductor connected to a second set of end position portions of the spring contact for providing contact of the other end portion. Connected to a pair of
Two spring contact conductors are connected by one of the spring contact conductors connected to a third set of end position portions of the spring contact that extends to one side of the contact of the other end portion, and the other Connected to the third set of end positions of the spring contacts by the other of the spring contact conductors connected to a third set of end positions of the spring contacts extending to the other side of the contacts of the end sections An electrical connector jack characterized by being provided.
(7) In the electrical connector jack according to (6),
The electrical connector jack is characterized in that a cross section of contact of the other terminal portion is smaller than a cross section of the spring contact conductor connected to a third set of terminal position portions of the spring contact.
(8) An electrical connector,
A circuit board comprising interconnecting conductors, each extending between a termination position portion of the spring contact and the other termination position portion;
A set of spring contact conductors each terminating in each one of the end position portions of the spring contact;
Each of the spring contact conductors in the set of end positions of the spring contacts comprises a plug contact zone, and a spring of 6.7 mm or less from the corresponding plug contact zone to the end position of each spring contact An electrical connector characterized by defining a contact conductive path.
(9) The electrical connector according to (8),
A second set of spring contact conductors each terminating in each one of the end position portions of the spring contact;
The second spring contact conductor set includes a right outer spring contact conductor on the right side of the spring contact conductor set and a left outer spring contact conductor on the left side of the spring contact conductor set. ,
Each of the second spring contact conductor sets includes a plug contact zone, and defines a spring contact conductive path of 10 mm or more from the corresponding plug contact zone to a terminal position portion of each of the spring contacts. Characteristic electrical connector.
(10) In the electrical connector according to (8),
An end position portion of the spring contact is offset from an end position portion of an adjacent spring contact so that a distance from the plug contact zone of the corresponding spring contact conductor is different. Some have spring contact conductive paths from 5.8 mm to 6.2 mm, and some of the sets of spring contact conductors have spring contact conductive paths from 5.6 mm to 6.0 mm Electrical connector.
(11) In the electrical connector according to (8),
A pair of mutually connected conductors and electrically connected spring contact conductors form a transmission line portion, and
A first / second second signal providing a first / second crosstalk compensation signal between a first interconnected conductor of one communication line and a second interconnected conductor of another communication line; Providing a second / first crosstalk compensation signal between the crosstalk compensation element and a second interconnected conductor of one communication line and a first interconnected conductor of another communication line A second / first crosstalk compensation element;
Each crosstalk compensation element is applied in the said termination position part or the place adjacent to the said termination position part. The electrical connector characterized by the above-mentioned.
(12) In the electrical connector according to (11),
The first / second crosstalk compensation element and the second / first crosstalk compensation element are connected between the first communication line and the second communication line on the circuit board. An electrical connector that is the only compensation element.
(13) The electrical connector according to (11),
Including another crosstalk compensation element for providing a second phase crosstalk compensation signal between the interconnected conductors of the one communication line and the interconnected conductors of the second communication line. Characteristic electrical connector.
(14) In the electrical connector according to (13),
The other crosstalk compensation element for providing a further crosstalk compensation signal is 7.2 mm from a terminal position portion of the interconnected conductor of the one communication line and the interconnected conductor of the second communication line. An electrical connector, characterized in that it is applied in less than.
(15) In the electrical connector according to (13),
The electrical connector, characterized in that the other crosstalk compensation element providing a further crosstalk compensation signal is applied in two of the other termination position portions.
(16) A connector jack,
For a plurality of transmission lines defining an RJ plug contact area with a certain amount of crosstalk between a transmission line with a central spring contact conductor pair and another transmission line with a separate spring contact conductor pair A plurality of spring contact conductors providing a pair of conductors, wherein the separated pair of spring contact conductors includes a spring contact conductor on each side of the central pair;
Interconnected conductors connected to the spring contact conductors to provide a conductive path for the communication line;
The conductors connected to each other at a position along the path that is between the communication line having the pair of central conductors and the communication line having the pair of separated conductors and is 6.2 mm or less from the contact area And a crosstalk compensation means applied to one of the separated connection conductors.
(17) In the connector jack according to (16),
The interconnected conductors comprise traces on a circuit board having through holes to provide electrical connection between each of the traces and one of the corresponding spring contact conductors;
The connector jack, wherein the crosstalk compensation means includes a trace connected by a pair of conductors and a central conductor, and a trace connected by a pair of conductors separated from the communication line.
(18) In the connector jack according to (17),
The crosstalk compensation means is connected to the through hole to apply the crosstalk compensation means adjacent to an interface between one of the traces and one of the corresponding through holes; A featured connector jack.
(19) In the connector jack according to (16),
The distance between the contact area of the central conductor pair or the separated conductor pair and the corresponding through hole is not more than 5.2 mm, and the other contact area of the outermost conductor and the corresponding through hole A connector jack characterized by having a distance of 10 mm or more.
(20) The connector jack according to (16),
A plurality of crimp contacts each terminating in each one of the interconnected conductors;
A connector jack comprising: a main body forming a wire receiving slot for terminating a wire to the crimp contact in cooperation with the crimp contact.

  As described above, according to the present invention, in the electrical connector jack, the spring contact conductor provides contact at the contact area, while being spaced from the terminal position portion of the circuit board (or from the surface of the opening). It is possible to terminate at a point. Further, the spring contact conductor can reduce or prevent crosstalk coupling with the adjacent spring contact conductor. Thereby, an RJ type connection for connection to an RJ type plug, connection to an interconnected circuit on a printed circuit board, and connection to a crosstalk compensation means for realizing a high level of throughput. A connector jack can be provided that includes a spring contact having a conductor pair for a plurality of communication lines defining an interface.

FIG. 3 is a perspective view of a jack assembly according to first and second embodiments of the present invention. It is a perspective view which shows the jack of FIG. 1 from which the jack cover part was removed. FIG. 2 is a partial cross-sectional side view of the jack assembly of FIG. 1 mating with an RJ plug having six connections. FIG. 2 is a partial cross-sectional end view of the jack assembly of FIG. 1 containing an RJ plug with six connections in a mated position. FIG. 3 is a partial cross-sectional cut-away view showing the jack assembly of FIG. 1 mated with an RJ plug having eight connections. 2 is a partial end view of the jack assembly of FIG. 1 containing an RJ plug with 8 connections in a mated position. FIG. It is sectional drawing of a circuit board which shows the length of the signal path from the spring contact of one set of a spring contactor, and the termination position part on a printed circuit board from a contact area. It is sectional drawing of a circuit board which shows the length of the signal path from the spring contact of one set of a spring contactor, and the termination position part on a printed circuit board from a contact area. It is sectional drawing of a circuit board which shows the length of the signal path from the spring contact of one set of a spring contactor, and the termination position part on a printed circuit board from a contact area. FIG. 2 is a perspective view of the jack assembly of FIG. 1 mating with an RJ plug with eight connections shown in phantom lines, and showing the distance from the contact zone to the jack opening. It is explanatory drawing of the complex plane which shows the crosstalk compensation about the 1st or only compensation phase of the 1st and 2nd Example of this invention. FIG. 2 shows a first side of a circuit board according to a first embodiment of the jack assembly of FIG. 1. It is a figure which shows the 2nd side of the circuit board of FIG. It is a figure which shows the general relationship between the deformation | transformation of a spring contact, and the length of a spring contact. It is explanatory drawing of the crosstalk compensation about the 1st and 2nd compensation phase by the 2nd Example of this invention. FIG. 6 is a diagram illustrating a first side of a circuit board according to a second embodiment of the jack assembly of FIG. 1. It is a figure which shows the 2nd side of the circuit board of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Jack assembly 12 Jack plastic cover part 14 Jack basic plastic part 16 Slot 21-28 Spring contact conductor 42, 44, 46 Termination point 62 RJ plug 60 Conductor connection 66 Circuit board 70 Contact point or contact area

Claims (7)

An electrical connector jack,
A main body including a support portion and a plug receiving portion defining an opening having an insertion surface;
A circuit board mounted on the support for placing the circuit board with respect to the plug that receives the insertion surface, the circuit board comprising circuit traces extending from a terminal position portion of the spring contact, respectively, A first set of spring contact end position portions having a first spacing from the insertion surface and a second set of spring contact end position portions having a second spacing from the insertion surface. And a circuit board comprising: a third set of end positions of spring contacts having a third spacing from the insertion surface;
A plurality of spring contact conductors, each terminating in one of the end position portions of the spring contact provided therein, and each being substantially separated by a common distance from the insertion surface And a plurality of spring contact conductors having a plug contact zone. The electrical connector jack of claim 1.
Each of the spring contact conductors provides a conductive path from the plug contact zone to the end position portion of each spring contact, and a first set of end positions of the spring contact and the spring contact The spring contact conductors connected to the second set of end position portions have a conductive path of 7 mm or less, and the spring contact conductors connected to the third set of end position portions of the spring contacts have a conductive path of 7 mm or more. An electrical connector jack characterized by comprising: The electrical connector jack of claim 2,
Each of the spring contact conductors provides a conductive path from the plug contact zone to the end position portion of each of the spring contacts and connects to a first set of end position portions of the spring contact Has a conductive path between 4 mm and 5 mm, and a spring contact conductor connected to the second set of end positions of the spring contact has a conductive path between 4.5 mm and 5.5 mm. An electrical connector jack, wherein the spring contact conductor connected to the third set of the terminal position portion of the spring contact has a conductive path of 10 mm or more. The electrical connector jack of claim 2,
Each of the spring contact conductors provides a conductive path from the plug contact zone to the end position portion of each spring contact, and a first set of end positions of the spring contact and the spring contact An electrical connector jack, characterized in that the spring contact conductors connected to the second set of end position portions have a cross section with a height of 0.35 mm or less and a width of 0.4 mm or less. The electrical connector jack of claim 2,
Each of the spring contact conductors provides a conductive path from the plug contact zone to the end position portion of each spring contact, and a first set of end positions of the spring contact and the spring contact The spring contact conductor connected to the second set of end position portions has a minimum deformation of 1.5 mm or less, and the spring contact conductor connected to the third set of end position portions of the spring contact is at least 1 An electrical connector jack characterized by a minimum deformation of 5 mm. The electrical connector jack of claim 1.
Each of the spring contact conductors provides a conductive path from the plug contact zone to the end position portion of each of the spring contacts;
Three spring contact conductors are connected to a first set of end position portions of the spring contact, and the three spring contact conductors are connected to a first set of end position portions of the spring contact. The second end position portion of the spring contact is connected by a contact conductor or by a spring contact conductor connected to a second set of end position portions of the spring contact for providing contact of the other end portion. Connected to a pair of
Two spring contact conductors are connected by one of the spring contact conductors connected to a third set of end position portions of the spring contact that extends to one side of the contact of the other end portion, and the other A third set of end position portions of the spring contact is provided by the other of the spring contact conductors connected to a third set of end position portions of the spring contact extending to the other side of the contact body of the end portion. Electrical connector jack characterized by being connected. The electrical connector jack of claim 6.
The cross section of the contact body of the other terminal portion is smaller than the cross section of the spring contact conductor connected to the third set of terminal position portions of the spring contact.

Images